Date: Fri, 13 Mar 2020 16:52:17 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r358962 - in stable/12: share/man/man9 sys/kern sys/sys Message-ID: <202003131652.02DGqHoW026308@repo.freebsd.org>
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Author: markj Date: Fri Mar 13 16:52:16 2020 New Revision: 358962 URL: https://svnweb.freebsd.org/changeset/base/358962 Log: MFC r358715: Add COUNTER_U64_SYSINIT() and COUNTER_U64_DEFINE_EARLY(). Modified: stable/12/share/man/man9/counter.9 stable/12/sys/kern/subr_counter.c stable/12/sys/kern/subr_pcpu.c stable/12/sys/sys/counter.h stable/12/sys/sys/kernel.h Directory Properties: stable/12/ (props changed) Modified: stable/12/share/man/man9/counter.9 ============================================================================== --- stable/12/share/man/man9/counter.9 Fri Mar 13 16:44:48 2020 (r358961) +++ stable/12/share/man/man9/counter.9 Fri Mar 13 16:52:16 2020 (r358962) @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd March 22, 2017 +.Dd March 6, 2020 .Dt COUNTER 9 .Os .Sh NAME @@ -53,6 +53,8 @@ .Fn counter_u64_zero "counter_u64_t c" .Ft int64_t .Fn counter_ratecheck "struct counter_rate *cr" "int64_t limit" +.Fn COUNTER_U64_SYSINIT "counter_u64_t c" +.Fn COUNTER_U64_DEFINE_EARLY "counter_u64_t c" .In sys/sysctl.h .Fn SYSCTL_COUNTER_U64 parent nbr name access ptr descr .Fn SYSCTL_ADD_COUNTER_U64 ctx parent nbr name access ptr descr @@ -142,6 +144,20 @@ If the limit was reached on previous second, but was j then .Fn counter_ratecheck returns number of events since previous reset. +.It Fn COUNTER_U64_SYSINIT c +Define a +.Xr SYSINIT 9 +initializer for the global counter +.Fa c . +.It Fn COUNTER_U64_DEFINE_EARLY c +Define and initialize a global counter +.Fa c . +It is always safe to increment +.Fa c , +though updates prior to the +.Dv SI_SUB_COUNTER +.Xr SYSINIT 9 +event are lost. .It Fn SYSCTL_COUNTER_U64 parent nbr name access ptr descr Declare a static .Xr sysctl 9 @@ -245,6 +261,7 @@ SYSCTL_COUNTER_U64_ARRAY(_debug, OID_AUTO, counter_arr .Xr malloc 9 , .Xr ratecheck 9 , .Xr sysctl 9 , +.Xr SYSINIT 9 , .Xr uma 9 .Sh HISTORY The Modified: stable/12/sys/kern/subr_counter.c ============================================================================== --- stable/12/sys/kern/subr_counter.c Fri Mar 13 16:44:48 2020 (r358961) +++ stable/12/sys/kern/subr_counter.c Fri Mar 13 16:52:16 2020 (r358962) @@ -172,3 +172,21 @@ counter_ratecheck(struct counter_rate *cr, int64_t lim return (val); } + +void +counter_u64_sysinit(void *arg) +{ + counter_u64_t *cp; + + cp = arg; + *cp = counter_u64_alloc(M_WAITOK); +} + +void +counter_u64_sysuninit(void *arg) +{ + counter_u64_t *cp; + + cp = arg; + counter_u64_free(*cp); +} Modified: stable/12/sys/kern/subr_pcpu.c ============================================================================== --- stable/12/sys/kern/subr_pcpu.c Fri Mar 13 16:44:48 2020 (r358961) +++ stable/12/sys/kern/subr_pcpu.c Fri Mar 13 16:52:16 2020 (r358962) @@ -151,7 +151,7 @@ pcpu_zones_startup(void) pcpu_zone_ptr = uma_zcreate("ptr pcpu", sizeof(void *), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_PCPU); } -SYSINIT(pcpu_zones, SI_SUB_VM, SI_ORDER_ANY, pcpu_zones_startup, NULL); +SYSINIT(pcpu_zones, SI_SUB_COUNTER, SI_ORDER_FIRST, pcpu_zones_startup, NULL); /* * First-fit extent based allocator for allocating space in the per-cpu Modified: stable/12/sys/sys/counter.h ============================================================================== --- stable/12/sys/sys/counter.h Fri Mar 13 16:44:48 2020 (r358961) +++ stable/12/sys/sys/counter.h Fri Mar 13 16:52:16 2020 (r358962) @@ -74,5 +74,18 @@ struct counter_rate { int64_t counter_ratecheck(struct counter_rate *, int64_t); +#define COUNTER_U64_SYSINIT(c) \ + SYSINIT(c##_counter_sysinit, SI_SUB_COUNTER, \ + SI_ORDER_ANY, counter_u64_sysinit, &c); \ + SYSUNINIT(c##_counter_sysuninit, SI_SUB_COUNTER, \ + SI_ORDER_ANY, counter_u64_sysuninit, &c) + +#define COUNTER_U64_DEFINE_EARLY(c) \ + counter_u64_t __read_mostly c = EARLY_COUNTER; \ + COUNTER_U64_SYSINIT(c) + +void counter_u64_sysinit(void *); +void counter_u64_sysuninit(void *); + #endif /* _KERNEL */ #endif /* ! __SYS_COUNTER_H__ */ Modified: stable/12/sys/sys/kernel.h ============================================================================== --- stable/12/sys/sys/kernel.h Fri Mar 13 16:44:48 2020 (r358961) +++ stable/12/sys/sys/kernel.h Fri Mar 13 16:52:16 2020 (r358962) @@ -91,7 +91,8 @@ enum sysinit_sub_id { SI_SUB_DONE = 0x0000001, /* processed*/ SI_SUB_TUNABLES = 0x0700000, /* establish tunable values */ SI_SUB_COPYRIGHT = 0x0800001, /* first use of console*/ - SI_SUB_VM = 0x1000000, /* virtual memory system init*/ + SI_SUB_VM = 0x1000000, /* virtual memory system init */ + SI_SUB_COUNTER = 0x1100000, /* counter(9) is initialized */ SI_SUB_KMEM = 0x1800000, /* kernel memory*/ SI_SUB_HYPERVISOR = 0x1A40000, /* * Hypervisor detection and
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